Saddle Surfaces

This example demonstrates the shape and properties of a saddle surface, a type of quadratic surface. Key mathematical concepts include 3D surfaces, differential geometry, and the concept of a saddle point. The construction uses the GeoGebra command 'CurveCartesian' with parameters a, c, and b to plot the surface in Cartesian coordinates. Suitable for high school students and mathematics enthusiasts studying solid geometry and surface properties, as well as for teaching optimization problems in calculus.